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-rw-r--r--target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch (renamed from target/linux/generic-2.4/patches/602-netfilter_layer7_2.17_with_pktmatch.patch)272
1 files changed, 111 insertions, 161 deletions
diff --git a/target/linux/generic-2.4/patches/602-netfilter_layer7_2.17_with_pktmatch.patch b/target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch
index 8fb23409ae..7ad8436212 100644
--- a/target/linux/generic-2.4/patches/602-netfilter_layer7_2.17_with_pktmatch.patch
+++ b/target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch
@@ -1,16 +1,14 @@
-Index: linux-2.4.35.4/Documentation/Configure.help
-===================================================================
---- linux-2.4.35.4.orig/Documentation/Configure.help
-+++ linux-2.4.35.4/Documentation/Configure.help
-@@ -29207,6 +29207,18 @@ CONFIG_SOUND_WM97XX
+--- a/Documentation/Configure.help
++++ b/Documentation/Configure.help
+@@ -29207,6 +29207,18 @@
If unsure, say N.
+CONFIG_IP_NF_MATCH_LAYER7
-+ Say Y if you want to be able to classify connections (and their
-+ packets) based on regular expression matching of their application
-+ layer data. This is one way to classify applications such as
-+ peer-to-peer filesharing systems that do not always use the same
++ Say Y if you want to be able to classify connections (and their
++ packets) based on regular expression matching of their application
++ layer data. This is one way to classify applications such as
++ peer-to-peer filesharing systems that do not always use the same
+ port.
+
+ To compile it as a module, choose M here. If unsure, say N.
@@ -21,11 +19,9 @@ Index: linux-2.4.35.4/Documentation/Configure.help
#
# A couple of things I keep forgetting:
# capitalize: AppleTalk, Ethernet, DOS, DMA, FAT, FTP, Internet,
-Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ip_conntrack.h
-===================================================================
---- linux-2.4.35.4.orig/include/linux/netfilter_ipv4/ip_conntrack.h
-+++ linux-2.4.35.4/include/linux/netfilter_ipv4/ip_conntrack.h
-@@ -207,6 +207,17 @@ struct ip_conntrack
+--- a/include/linux/netfilter_ipv4/ip_conntrack.h
++++ b/include/linux/netfilter_ipv4/ip_conntrack.h
+@@ -207,6 +207,17 @@
} nat;
#endif /* CONFIG_IP_NF_NAT_NEEDED */
@@ -33,9 +29,9 @@ Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ip_conntrack.h
+ struct {
+ unsigned int numpackets; /* surely this is kept track of somewhere else, right? I can't find it... */
+ char * app_proto; /* "http", "ftp", etc. NULL if unclassifed */
-+
++
+ /* the application layer data so far. NULL if ->numpackets > numpackets */
-+ char * app_data;
++ char * app_data;
+
+ unsigned int app_data_len;
+ } layer7;
@@ -43,12 +39,10 @@ Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ip_conntrack.h
};
/* get master conntrack via master expectation */
-Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ipt_layer7.h
-===================================================================
--- /dev/null
-+++ linux-2.4.35.4/include/linux/netfilter_ipv4/ipt_layer7.h
-@@ -0,0 +1,27 @@
-+/*
++++ b/include/linux/netfilter_ipv4/ipt_layer7.h
+@@ -0,0 +1,26 @@
++/*
+ By Matthew Strait <quadong@users.sf.net>, Dec 2003.
+ http://l7-filter.sf.net
+
@@ -69,31 +63,26 @@ Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ipt_layer7.h
+
+struct ipt_layer7_info {
+ char protocol[MAX_PROTOCOL_LEN];
++ char invert:1;
+ char pattern[MAX_PATTERN_LEN];
-+ u_int8_t invert;
-+ u_int8_t pkt;
+};
+
+#endif /* _IPT_LAYER7_H */
-Index: linux-2.4.35.4/net/ipv4/netfilter/Config.in
-===================================================================
---- linux-2.4.35.4.orig/net/ipv4/netfilter/Config.in
-+++ linux-2.4.35.4/net/ipv4/netfilter/Config.in
-@@ -44,6 +44,9 @@ if [ "$CONFIG_IP_NF_IPTABLES" != "n" ];
+--- a/net/ipv4/netfilter/Config.in
++++ b/net/ipv4/netfilter/Config.in
+@@ -44,6 +44,9 @@
if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
dep_tristate ' Unclean match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_UNCLEAN $CONFIG_IP_NF_IPTABLES
dep_tristate ' Owner match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_OWNER $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' Layer 7 match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_LAYER7 $CONFIG_IP_NF_CONNTRACK
+ dep_mbool ' Layer 7 debugging output (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_LAYER7_DEBUG $CONFIG_IP_NF_MATCH_LAYER7
-+
++
fi
# The targets
dep_tristate ' Packet filtering' CONFIG_IP_NF_FILTER $CONFIG_IP_NF_IPTABLES
-Index: linux-2.4.35.4/net/ipv4/netfilter/Makefile
-===================================================================
---- linux-2.4.35.4.orig/net/ipv4/netfilter/Makefile
-+++ linux-2.4.35.4/net/ipv4/netfilter/Makefile
-@@ -87,6 +87,7 @@ obj-$(CONFIG_IP_NF_MATCH_STATE) += ipt_s
+--- a/net/ipv4/netfilter/Makefile
++++ b/net/ipv4/netfilter/Makefile
+@@ -87,6 +87,7 @@
obj-$(CONFIG_IP_NF_MATCH_CONNTRACK) += ipt_conntrack.o
obj-$(CONFIG_IP_NF_MATCH_UNCLEAN) += ipt_unclean.o
obj-$(CONFIG_IP_NF_MATCH_TCPMSS) += ipt_tcpmss.o
@@ -101,11 +90,9 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/Makefile
# targets
obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
-Index: linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_core.c
-===================================================================
---- linux-2.4.35.4.orig/net/ipv4/netfilter/ip_conntrack_core.c
-+++ linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_core.c
-@@ -346,6 +346,14 @@ destroy_conntrack(struct nf_conntrack *n
+--- a/net/ipv4/netfilter/ip_conntrack_core.c
++++ b/net/ipv4/netfilter/ip_conntrack_core.c
+@@ -346,6 +346,14 @@
}
kfree(ct->master);
}
@@ -116,15 +103,13 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_core.c
+ if(ct->layer7.app_data)
+ kfree(ct->layer7.app_data);
+ #endif
-+
++
WRITE_UNLOCK(&ip_conntrack_lock);
if (master)
-Index: linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_standalone.c
-===================================================================
---- linux-2.4.35.4.orig/net/ipv4/netfilter/ip_conntrack_standalone.c
-+++ linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_standalone.c
-@@ -107,6 +107,13 @@ print_conntrack(char *buffer, struct ip_
+--- a/net/ipv4/netfilter/ip_conntrack_standalone.c
++++ b/net/ipv4/netfilter/ip_conntrack_standalone.c
+@@ -107,6 +107,13 @@
len += sprintf(buffer + len, "[ASSURED] ");
len += sprintf(buffer + len, "use=%u ",
atomic_read(&conntrack->ct_general.use));
@@ -132,21 +117,19 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_standalone.c
+ #if defined(CONFIG_IP_NF_MATCH_LAYER7) || defined(CONFIG_IP_NF_MATCH_LAYER7_MODULE)
+ if(conntrack->layer7.app_proto)
+ len += sprintf(buffer + len, "l7proto=%s ",
-+ conntrack->layer7.app_proto);
++ conntrack->layer7.app_proto);
+ #endif
+
len += sprintf(buffer + len, "\n");
return len;
-Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
-===================================================================
--- /dev/null
-+++ linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
-@@ -0,0 +1,595 @@
-+/*
-+ Kernel module to match application layer (OSI layer 7)
++++ b/net/ipv4/netfilter/ipt_layer7.c
+@@ -0,0 +1,570 @@
++/*
++ Kernel module to match application layer (OSI layer 7)
+ data in connections.
-+
++
+ http://l7-filter.sf.net
+
+ By Matthew Strait and Ethan Sommer, 2003-2005.
@@ -203,24 +186,24 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+
+/* I'm new to locking. Here are my assumptions:
+
-+- No one will write to /proc/net/layer7_numpackets over and over very fast;
++- No one will write to /proc/net/layer7_numpackets over and over very fast;
+ if they did, nothing awful would happen.
+
+- This code will never be processing the same packet twice at the same time,
+ because iptables rules are traversed in order.
+
-+- It doesn't matter if two packets from different connections are in here at
++- It doesn't matter if two packets from different connections are in here at
+ the same time, because they don't share any data.
+
+- It _does_ matter if two packets from the same connection are here at the same
-+ time. In this case, we have to protect the conntracks and the list of
++ time. In this case, we have to protect the conntracks and the list of
+ compiled patterns.
+*/
+DECLARE_RWLOCK(ct_lock);
+DECLARE_LOCK(list_lock);
+
+#if CONFIG_IP_NF_MATCH_LAYER7_DEBUG
-+/* Converts an unfriendly string into a friendly one by
++/* Converts an unfriendly string into a friendly one by
+replacing unprintables with periods and all whitespace with " ". */
+static char * friendly_print(unsigned char * s)
+{
@@ -228,7 +211,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ int i;
+
+ if(!f) {
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in friendly_print, bailing.\n");
+ return NULL;
+ }
@@ -252,7 +235,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ return (char)(i - 10 + 'a');
+ break;
+ default:
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk("Problem in dec2hex\n");
+ return '\0';
+ }
@@ -264,7 +247,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ int i;
+
+ if(!g) {
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in hex_print, bailing.\n");
+ return NULL;
+ }
@@ -282,7 +265,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+
+/* Use instead of regcomp. As we expect to be seeing the same regexps over and
+over again, it make sense to cache the results. */
-+static regexp * compile_and_cache(char * regex_string, char * protocol)
++static regexp * compile_and_cache(char * regex_string, char * protocol)
+{
+ struct pattern_cache * node = first_pattern_cache;
+ struct pattern_cache * last_pattern_cache = first_pattern_cache;
@@ -290,7 +273,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ unsigned int len;
+
+ while (node != NULL) {
-+ if (!strcmp(node->regex_string, regex_string))
++ if (!strcmp(node->regex_string, regex_string))
+ return node->pattern;
+
+ last_pattern_cache = node;/* points at the last non-NULL node */
@@ -298,12 +281,12 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ }
+
+ /* If we reach the end of the list, then we have not yet cached
-+ the pattern for this regex. Let's do that now.
++ the pattern for this regex. Let's do that now.
+ Be paranoid about running out of memory to avoid list corruption. */
+ tmp = kmalloc(sizeof(struct pattern_cache), GFP_ATOMIC);
+
+ if(!tmp) {
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in compile_and_cache, bailing.\n");
+ return NULL;
+ }
@@ -313,7 +296,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ tmp->next = NULL;
+
+ if(!tmp->regex_string || !tmp->pattern) {
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in compile_and_cache, bailing.\n");
+ kfree(tmp->regex_string);
+ kfree(tmp->pattern);
@@ -334,7 +317,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ DPRINTK("About to compile this: \"%s\"\n", regex_string);
+ node->pattern = regcomp(regex_string, &len);
+ if ( !node->pattern ) {
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: Error compiling regexp \"%s\" (%s)\n", regex_string, protocol);
+ /* pattern is now cached as NULL, so we won't try again. */
+ }
@@ -357,14 +340,14 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+/* Returns offset the into the skb->data that the application data starts */
+static int app_data_offset(const struct sk_buff *skb)
+{
-+ /* In case we are ported somewhere (ebtables?) where skb->nh.iph
++ /* In case we are ported somewhere (ebtables?) where skb->nh.iph
+ isn't set, this can be gotten from 4*(skb->data[0] & 0x0f) as well. */
+ int ip_hl = 4*skb->nh.iph->ihl;
+
+ if( skb->nh.iph->protocol == IPPROTO_TCP ) {
-+ /* 12 == offset into TCP header for the header length field.
-+ Can't get this with skb->h.th->doff because the tcphdr
-+ struct doesn't get set when routing (this is confirmed to be
++ /* 12 == offset into TCP header for the header length field.
++ Can't get this with skb->h.th->doff because the tcphdr
++ struct doesn't get set when routing (this is confirmed to be
+ true in Netfilter as well as QoS.) */
+ int tcp_hl = 4*(skb->data[ip_hl + 12] >> 4);
+
@@ -374,7 +357,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ } else if( skb->nh.iph->protocol == IPPROTO_ICMP ) {
+ return ip_hl + 8; /* ICMP header is 8 bytes */
+ } else {
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: tried to handle unknown protocol!\n");
+ return ip_hl + 8; /* something reasonable */
+ }
@@ -394,9 +377,9 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ char * f = friendly_print(master_conntrack->layer7.app_data);
+ char * g = hex_print(master_conntrack->layer7.app_data);
+ DPRINTK("\nl7-filter gave up after %d bytes (%d packets):\n%s\n",
-+ strlen(f),
++ strlen(f),
+ TOTAL_PACKETS, f);
-+ kfree(f);
++ kfree(f);
+ DPRINTK("In hex: %s\n", g);
+ kfree(g);
+ }
@@ -413,7 +396,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ if(!conntrack->layer7.app_proto) {
+ conntrack->layer7.app_proto = kmalloc(strlen(master_conntrack->layer7.app_proto)+1, GFP_ATOMIC);
+ if(!conntrack->layer7.app_proto){
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in match_no_append, bailing.\n");
+ WRITE_UNLOCK(&ct_lock);
+ return 1;
@@ -421,16 +404,16 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ strcpy(conntrack->layer7.app_proto, master_conntrack->layer7.app_proto);
+ }
+ WRITE_UNLOCK(&ct_lock);
-+
++
+ return (!strcmp(master_conntrack->layer7.app_proto, info->protocol));
+ }
+ else {
-+ /* If not classified, set to "unknown" to distinguish from
++ /* If not classified, set to "unknown" to distinguish from
+ connections that are still being tested. */
+ WRITE_LOCK(&ct_lock);
+ master_conntrack->layer7.app_proto = kmalloc(strlen("unknown")+1, GFP_ATOMIC);
+ if(!master_conntrack->layer7.app_proto){
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in match_no_append, bailing.\n");
+ WRITE_UNLOCK(&ct_lock);
+ return 1;
@@ -441,34 +424,26 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ }
+}
+
-+static int add_datastr(char *target, int offset, char *app_data, int len)
++/* add the new app data to the conntrack. Return number of bytes added. */
++static int add_data(struct ip_conntrack * master_conntrack,
++ char * app_data, int appdatalen)
+{
+ int length = 0, i;
++ int oldlength = master_conntrack->layer7.app_data_len;
+
+ /* Strip nulls. Make everything lower case (our regex lib doesn't
+ do case insensitivity). Add it to the end of the current data. */
-+ for(i = 0; i < maxdatalen-offset-1 && i < len; i++) {
++ for(i = 0; i < maxdatalen-oldlength-1 && i < appdatalen; i++) {
+ if(app_data[i] != '\0') {
-+ target[length+offset] =
++ master_conntrack->layer7.app_data[length+oldlength] =
+ /* the kernel version of tolower mungs 'upper ascii' */
+ isascii(app_data[i])? tolower(app_data[i]) : app_data[i];
+ length++;
+ }
+ }
+
-+ target[length+offset] = '\0';
-+
-+ return length;
-+}
-+
-+/* add the new app data to the conntrack. Return number of bytes added. */
-+static int add_data(struct ip_conntrack * master_conntrack,
-+ char * app_data, int appdatalen)
-+{
-+ int length;
-+
-+ length = add_datastr(master_conntrack->layer7.app_data, master_conntrack->layer7.app_data_len, app_data, appdatalen);
-+ master_conntrack->layer7.app_data_len += length;
++ master_conntrack->layer7.app_data[length+oldlength] = '\0';
++ master_conntrack->layer7.app_data_len = length + oldlength;
+
+ return length;
+}
@@ -481,7 +456,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ struct ipt_layer7_info * info = (struct ipt_layer7_info *)matchinfo;
+ enum ip_conntrack_info master_ctinfo, ctinfo;
+ struct ip_conntrack *master_conntrack, *conntrack;
-+ unsigned char *app_data, *tmp_data;
++ unsigned char * app_data;
+ unsigned int pattern_result, appdatalen;
+ regexp * comppattern;
+
@@ -490,16 +465,16 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ return info->invert;
+ }
+
-+ /* Treat the parent and all its children together as one connection,
-+ except for the purpose of setting conntrack->layer7.app_proto in the
-+ actual connection. This makes /proc/net/ip_conntrack somewhat more
++ /* Treat the parent and all its children together as one connection,
++ except for the purpose of setting conntrack->layer7.app_proto in the
++ actual connection. This makes /proc/net/ip_conntrack somewhat more
+ satisfying. */
+ if(!(conntrack = ip_conntrack_get((struct sk_buff *)skb, &ctinfo)) ||
+ !(master_conntrack = ip_conntrack_get((struct sk_buff *)skb, &master_ctinfo))) {
+ DPRINTK("layer7: packet is not from a known connection, giving up.\n");
+ return info->invert;
+ }
-+
++
+ /* Try to get a master conntrack (and its master etc) for FTP, etc. */
+ while (master_ct(master_conntrack) != NULL)
+ master_conntrack = master_ct(master_conntrack);
@@ -511,12 +486,12 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ }
+
+ /* if we've classified it or seen too many packets */
-+ if(!info->pkt && (TOTAL_PACKETS > num_packets ||
-+ master_conntrack->layer7.app_proto)) {
-+
++ if(TOTAL_PACKETS > num_packets ||
++ master_conntrack->layer7.app_proto) {
++
+ pattern_result = match_no_append(conntrack, master_conntrack, ctinfo, master_ctinfo, info);
-+
-+ /* skb->cb[0] == seen. Avoid doing things twice if there are two l7
++
++ /* skb->cb[0] == seen. Avoid doing things twice if there are two l7
+ rules. I'm not sure that using cb for this purpose is correct, although
+ it says "put your private variables there". But it doesn't look like it
+ is being used for anything else in the skbs that make it here. How can
@@ -528,12 +503,12 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+
+ if(skb_is_nonlinear(skb)){
+ if(skb_linearize(skb, GFP_ATOMIC) != 0){
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: failed to linearize packet, bailing.\n");
+ return info->invert;
+ }
+ }
-+
++
+ /* now that the skb is linearized, it's safe to set these. */
+ app_data = skb->data + app_data_offset(skb);
+ appdatalen = skb->tail - app_data;
@@ -543,23 +518,6 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ comppattern = compile_and_cache(info->pattern, info->protocol);
+ UNLOCK_BH(&list_lock);
+
-+ if (info->pkt) {
-+ tmp_data = kmalloc(maxdatalen, GFP_ATOMIC);
-+ if(!tmp_data){
-+ if (net_ratelimit())
-+ printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
-+ return info->invert;
-+ }
-+
-+ tmp_data[0] = '\0';
-+ add_datastr(tmp_data, 0, app_data, appdatalen);
-+ pattern_result = ((comppattern && regexec(comppattern, tmp_data)) ? 1 : 0);
-+ kfree(tmp_data);
-+ tmp_data = NULL;
-+
-+ return (pattern_result ^ info->invert);
-+ }
-+
+ /* On the first packet of a connection, allocate space for app data */
+ WRITE_LOCK(&ct_lock);
+ if(TOTAL_PACKETS == 1 && !skb->cb[0] && !master_conntrack->layer7.app_data) {
@@ -575,7 +533,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ }
+ WRITE_UNLOCK(&ct_lock);
+
-+ /* Can be here, but unallocated, if numpackets is increased near
++ /* Can be here, but unallocated, if numpackets is increased near
+ the beginning of a connection */
+ if(master_conntrack->layer7.app_data == NULL)
+ return (info->invert); /* unmatched */
@@ -607,7 +565,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ WRITE_LOCK(&ct_lock);
+ master_conntrack->layer7.app_proto = kmalloc(strlen(info->protocol)+1, GFP_ATOMIC);
+ if(!master_conntrack->layer7.app_proto){
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
+ WRITE_UNLOCK(&ct_lock);
+ return (pattern_result ^ info->invert);
@@ -625,16 +583,16 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+static int checkentry(const char *tablename, const struct ipt_ip *ip,
+ void *matchinfo, unsigned int matchsize, unsigned int hook_mask)
+{
-+ if (matchsize != IPT_ALIGN(sizeof(struct ipt_layer7_info)))
++ if (matchsize != IPT_ALIGN(sizeof(struct ipt_layer7_info)))
+ return 0;
+ return 1;
+}
+
-+static struct ipt_match layer7_match = {
-+ .name = "layer7",
-+ .match = &match,
-+ .checkentry = &checkentry,
-+ .me = THIS_MODULE
++static struct ipt_match layer7_match = {
++ .name = "layer7",
++ .match = &match,
++ .checkentry = &checkentry,
++ .me = THIS_MODULE
+};
+
+/* taken from drivers/video/modedb.c */
@@ -654,30 +612,30 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+}
+
+/* write out num_packets to userland. */
-+static int layer7_read_proc(char* page, char ** start, off_t off, int count,
-+ int* eof, void * data)
++static int layer7_read_proc(char* page, char ** start, off_t off, int count,
++ int* eof, void * data)
+{
-+ if(num_packets > 99 && net_ratelimit())
++ if(num_packets > 99 && net_ratelimit())
+ printk(KERN_ERR "layer7: NOT REACHED. num_packets too big\n");
-+
++
+ page[0] = num_packets/10 + '0';
+ page[1] = num_packets%10 + '0';
+ page[2] = '\n';
+ page[3] = '\0';
-+
++
+ *eof=1;
+
+ return 3;
+}
+
+/* Read in num_packets from userland */
-+static int layer7_write_proc(struct file* file, const char* buffer,
-+ unsigned long count, void *data)
++static int layer7_write_proc(struct file* file, const char* buffer,
++ unsigned long count, void *data)
+{
+ char * foo = kmalloc(count, GFP_ATOMIC);
+
+ if(!foo){
-+ if (net_ratelimit())
++ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory, bailing. num_packets unchanged.\n");
+ return count;
+ }
@@ -687,7 +645,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ num_packets = my_atoi(foo);
+ kfree (foo);
+
-+ /* This has an arbitrary limit to make the math easier. I'm lazy.
++ /* This has an arbitrary limit to make the math easier. I'm lazy.
+ But anyway, 99 is a LOT! If you want more, you're doing it wrong! */
+ if(num_packets > 99) {
+ printk(KERN_WARNING "layer7: num_packets can't be > 99.\n");
@@ -696,7 +654,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ printk(KERN_WARNING "layer7: num_packets can't be < 1.\n");
+ num_packets = 1;
+ }
-+
++
+ return count;
+}
+
@@ -721,11 +679,11 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ printk(KERN_WARNING "layer7: maxdatalen can't be < 1, using 1\n");
+ maxdatalen = 1;
+ }
-+ /* This is not a hard limit. It's just here to prevent people from
++ /* This is not a hard limit. It's just here to prevent people from
+ bringing their slow machines to a grinding halt. */
+ else if(maxdatalen > 65536) {
+ printk(KERN_WARNING "layer7: maxdatalen can't be > 65536, using 65536\n");
-+ maxdatalen = 65536;
++ maxdatalen = 65536;
+ }
+ return ipt_register_match(&layer7_match);
+}
@@ -738,10 +696,8 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+
+module_init(init);
+module_exit(fini);
-Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
-===================================================================
--- /dev/null
-+++ linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
++++ b/net/ipv4/netfilter/regexp/regexp.c
@@ -0,0 +1,1195 @@
+/*
+ * regcomp and regexec -- regsub and regerror are elsewhere
@@ -770,7 +726,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+ *
+ * This code was modified by Ethan Sommer to work within the kernel
+ * (it now uses kmalloc etc..)
-+ *
++ *
+ * Modified slightly by Matthew Strait to use more modern C.
+ */
+
@@ -1098,7 +1054,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+ }
+
+ /* Make a closing node, and hook it on the end. */
-+ ender = regnode((paren) ? CLOSE+parno : END);
++ ender = regnode((paren) ? CLOSE+parno : END);
+ regtail(ret, ender);
+
+ /* Hook the tails of the branches to the closing node. */
@@ -1789,7 +1745,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+/*
+ - regnext - dig the "next" pointer out of a node
+ */
-+static char*
++static char*
+regnext(char *p)
+{
+ register int offset;
@@ -1830,7 +1786,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+ next = regnext(s);
+ if (next == NULL) /* Next ptr. */
+ printf("(0)");
-+ else
++ else
+ printf("(%d)", (s-r->program)+(next-s));
+ s += 3;
+ if (op == ANYOF || op == ANYBUT || op == EXACTLY) {
@@ -1938,10 +1894,8 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+#endif
+
+
-Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.h
-===================================================================
--- /dev/null
-+++ linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.h
++++ b/net/ipv4/netfilter/regexp/regexp.h
@@ -0,0 +1,40 @@
+/*
+ * Definitions etc. for regexp(3) routines.
@@ -1953,8 +1907,8 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.h
+#ifndef REGEXP_H
+#define REGEXP_H
+
-+/*
-+http://www.opensource.apple.com/darwinsource/10.3/expect-1/expect/expect.h ,
++/*
++http://www.opensource.apple.com/darwinsource/10.3/expect-1/expect/expect.h ,
+which contains a version of this library, says:
+
+ *
@@ -1983,20 +1937,16 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.h
+void regerror(char *s);
+
+#endif
-Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regmagic.h
-===================================================================
--- /dev/null
-+++ linux-2.4.35.4/net/ipv4/netfilter/regexp/regmagic.h
++++ b/net/ipv4/netfilter/regexp/regmagic.h
@@ -0,0 +1,5 @@
+/*
+ * The first byte of the regexp internal "program" is actually this magic
+ * number; the start node begins in the second byte.
+ */
+#define MAGIC 0234
-Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regsub.c
-===================================================================
--- /dev/null
-+++ linux-2.4.35.4/net/ipv4/netfilter/regexp/regsub.c
++++ b/net/ipv4/netfilter/regexp/regsub.c
@@ -0,0 +1,95 @@
+/*
+ * regsub
@@ -2054,7 +2004,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regsub.c
+ register char c;
+ register int no;
+ register int len;
-+
++
+ /* Not necessary and gcc doesn't like it -MLS */
+ /*extern char *strncpy();*/
+